It's not just that the men don't want kids , most women seem to not want kids as well. Birth control, abortion , the economic crisis, the urbanization and the secularization has led to the birth rates to drop .

http://en.wikipedia.org/wiki/Sub-replacement_fertility

Of course we can't force anyone to have children if they don't want to , but do you think societies should be worried about the low fertility rates ? Is there a solution to the problem ?